1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
--- a/drivers/net/arm/ixp4xx_eth.c
+++ b/drivers/net/arm/ixp4xx_eth.c
@@ -54,7 +54,7 @@
#define POOL_ALLOC_SIZE (sizeof(struct desc) * (RX_DESCS + TX_DESCS))
#define REGS_SIZE 0x1000
-#define MAX_MRU 1536 /* 0x600 */
+#define MAX_MRU 16384
#define RX_BUFF_SIZE ALIGN((NET_IP_ALIGN) + MAX_MRU, 4)
#define NAPI_WEIGHT 16
@@ -1011,6 +1011,30 @@ static void destroy_queues(struct port *
}
}
+static int eth_do_change_mtu(struct net_device *dev, int mtu)
+{
+ struct port *port;
+ struct msg msg;
+
+ port = netdev_priv(dev);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd = NPE_SETMAXFRAMELENGTHS;
+ msg.eth_id = port->id;
+
+ /* max rx/tx 64 byte blocks */
+ msg.byte2 = ((mtu + 63) / 64) << 8;
+ msg.byte3 = ((mtu + 63) / 64) << 8;
+
+ msg.byte4 = msg.byte6 = mtu >> 8;
+ msg.byte5 = msg.byte7 = mtu & 0xff;
+
+ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_MAX_FRAME_LENGTH"))
+ return -EIO;
+
+ return 0;
+}
+
static int eth_open(struct net_device *dev)
{
struct port *port = netdev_priv(dev);
@@ -1061,6 +1085,8 @@ static int eth_open(struct net_device *d
if (npe_send_recv_message(port->npe, &msg, "ETH_SET_FIREWALL_MODE"))
return -EIO;
+ eth_do_change_mtu(dev, dev->mtu);
+
if ((err = request_queues(port)) != 0)
return err;
@@ -1238,6 +1264,24 @@ static void eth_init_mii(struct net_devi
}
+static int eth_change_mtu(struct net_device *dev, int mtu)
+{
+ int ret;
+
+ if (mtu > MAX_MRU)
+ return -EINVAL;
+
+ if (dev->flags & IFF_UP) {
+ ret = eth_do_change_mtu(dev, mtu);
+ if (ret < 0)
+ return ret;
+ }
+
+ dev->mtu = mtu;
+
+ return 0;
+}
+
static int __devinit eth_init_one(struct platform_device *pdev)
{
struct port *port;
@@ -1272,6 +1316,7 @@ static int __devinit eth_init_one(struct
goto err_free;
}
+ dev->change_mtu = eth_change_mtu;
dev->open = eth_open;
dev->hard_start_xmit = eth_xmit;
dev->stop = eth_close;
|
